The Twin Screw Thread
#2776
For anyone running the "pizza injector bushings", I am having one helluva time seating the injectors into the bushings. These were machined to the supposedly latest and greatest final drawing, and are using the correct size O-rings. O-rings lubed with MolyKote 111 prior to injector install. They are just insanely tight going in past the O-ring. I can't press it enough by hand, using my thumbs. I got 2 installed, but just barely. Once seated they're fine. I'm actually in the process of making a fixture/adaptor to press them in (gently) with a hydraulic press. Just wondering if anyone else ever had that issue? If so, what did you do to make it easier to install?
#2777
Administrator - "Tyson"
Lifetime Rennlist
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Lifetime Rennlist
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http://www.frozenboost.com/water-to-...or-p-1002.html
I have this on mine and am very happy with it. Fits well and was fairly simple to adapt to my 85 track car. I am also using it on my DD as well with the new
TS system.
I have this on mine and am very happy with it. Fits well and was fairly simple to adapt to my 85 track car. I am also using it on my DD as well with the new
TS system.
Do you have a photo of yours in place?
#2779
Administrator - "Tyson"
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Lifetime Rennlist
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Very nice. Looks like the only thing that would be in the way is the motor for the nose flaps. Which reminds me, I need to remove those.
#2780
Drifting
Thanks Obehave. Good info. I've looked at Frozen Boost's site and wondered about using their products. As far as the thickness of the o[rings I was thinking a bout that but hadn't researched the thickness yet. Thanks.
#2781
Rennlist Member
#2782
Rainman
Rennlist Member
Rennlist Member
Anybody have an S3 (or S4) lower manifold not currently installed?
Long shot, but I would love to get my hands on one for a few days to look it over and measure and stuff for my 944 project.
Long shot, but I would love to get my hands on one for a few days to look it over and measure and stuff for my 944 project.
#2783
Rennlist Member
Thanks guys.
Dave thanks for the tip. I didn't even think of any issues with that seam. How did you rig up a test gauge? Any pics?
Yes, I polished the upper intake. It had originally been "somewhat" polished, but I did the full monty with both rouge and white compound on a 1/2" cordless drill. I couldn't get the counter space to use the regular bench grinder/buffer. It still came out pretty good.
Dave thanks for the tip. I didn't even think of any issues with that seam. How did you rig up a test gauge? Any pics?
Yes, I polished the upper intake. It had originally been "somewhat" polished, but I did the full monty with both rouge and white compound on a 1/2" cordless drill. I couldn't get the counter space to use the regular bench grinder/buffer. It still came out pretty good.
I pump it up to 35 psi and watch it for leak down, may need to hold the tubing on the top, works better w/o the top seal.
Future would be an old fuel rail and 4 connectors and make a proper test jig.
You can also load the tubing with a bit of injection cleaner and watch the spray pattern as you click the injector on and off, do not keep the voltage on steady just pulse it
Second pic is a leaking seal, no way to fix these as far as I know.
#2784
Drifting
Thanks Dave1 Great info!
V2, I have almost an entire extra Keel setup in the garage. Lower and upper plenum, I/C, Jag/Eaton M112, original snout and pulley bracket, etc...
If you want I can send you all kinds of pics, dimensions, etc.... I'm not sure how well any of it would translate over to a 944 though. Personally I would run the s/c on a separate bracket beside the engine, and run intake and outlet tubing as required. Somewhat more like the way a centrifugal s/c is setup. Lots of DIY setups like that all over the internet. Several new s/c kits for vehicles like chevy trucks have the twin screw setup that way.
V2, I have almost an entire extra Keel setup in the garage. Lower and upper plenum, I/C, Jag/Eaton M112, original snout and pulley bracket, etc...
If you want I can send you all kinds of pics, dimensions, etc.... I'm not sure how well any of it would translate over to a 944 though. Personally I would run the s/c on a separate bracket beside the engine, and run intake and outlet tubing as required. Somewhat more like the way a centrifugal s/c is setup. Lots of DIY setups like that all over the internet. Several new s/c kits for vehicles like chevy trucks have the twin screw setup that way.
#2785
Rainman
Rennlist Member
Rennlist Member
you mean like this
(the reason i am interested in the Keel etc setups is that i want to switch to a DOHC head, so i need a new manifold. DOHC head gives me less space to work with and i think a simple "small pizza box" will work for me too)
(the reason i am interested in the Keel etc setups is that i want to switch to a DOHC head, so i need a new manifold. DOHC head gives me less space to work with and i think a simple "small pizza box" will work for me too)
#2787
Drifting
BTW, I went and checked my O-rings and they are already the thinnest you can get in that diameter. I'm running the 021 size, which is .070" cross section. Oh well. Would've been nice if that was all I needed to do.
#2788
Rennlist Member
I found a new machine shop that has good pricing on lathe work. After sending a couple of the old pulley files over, we decided it would be more cost effective to just machine the entire pulley as one piece. This required some modifications to remove extra rotating mass, the result is this windowed single-piece pulley.
PO is going in on Monday for the first batch.
PO is going in on Monday for the first batch.